p PatchFirst

CVE-2026-23556

CVE-2026-23556 · oxenstored keeps quota related use counts across domain destruction

This page contains facts from public vulnerability sources. Check the original advisory before updating.

When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When the domain ID is eventually reused, the new domain can create fewer nodes before beeing deemed to be over quota.

CVSS 9.4 · Critical · EPSS 0.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • oxenstored

    Versions
    • all: Affected

    No fix published

  • xen Debian:12

    Versions
    • 4.17.1+2-gb773c48e36-1
    • 4.17.2+55-g0b56bed864-1
    • 4.17.2+76-ge1f9cb16e2-1
    • 4.17.2+76-ge1f9cb16e2-1~deb12u1
    • 4.17.2-1
    • 4.17.3+10-g091466ba55-1
    • 4.17.3+10-g091466ba55-1.1
    • 4.17.3+10-g091466ba55-1.1~exp1
    • 4.17.3+10-g091466ba55-1.1~exp2
    • 4.17.3+10-g091466ba55-1~deb12u1
    • 4.17.3+36-g54dacb5c02-1
    • 4.17.5+23-ga4e5191dc0-1
    • 4.17.5+23-ga4e5191dc0-1+deb12u1
    • 4.17.5+72-g01140da4e8-1
    Affected ranges
    • ECOSYSTEM: < 4.17.7-0+deb12u1

    Update to 4.17.7-0+deb12u1

  • xen Debian:13

    Versions
    • 4.20.0+68-g35cb38b222-1
    • 4.20.2+37-g61ff35323e-0+deb13u1
    • 4.20.2+37-g61ff35323e-1
    • 4.20.2+7-g1badcf5035-0+deb13u1
    • 4.20.2+7-g1badcf5035-1
    • 4.20.2+7-g1badcf5035-2
    Affected ranges
    • ECOSYSTEM: < 4.20.3+127-gc42374a105-0+deb13u1

    Update to 4.20.3+127-gc42374a105-0+deb13u1

  • xen Debian:14

    Versions
    • 4.20.0+68-g35cb38b222-1
    • 4.20.2+37-g61ff35323e-1
    • 4.20.2+7-g1badcf5035-1
    • 4.20.2+7-g1badcf5035-2
    Affected ranges
    • ECOSYSTEM: < 4.20.3+127-gc42374a105-1

    Update to 4.20.3+127-gc42374a105-1

  • xen Ubuntu:16.04:LTS

    Versions
    • 4.5.1-0ubuntu1
    • 4.5.1-0ubuntu2
    • 4.6.0-1ubuntu1
    • 4.6.0-1ubuntu2
    • 4.6.0-1ubuntu4
    • 4.6.0-1ubuntu4.1
    • 4.6.0-1ubuntu4.2
    • 4.6.0-1ubuntu4.3
    • 4.6.5-0ubuntu1
    • 4.6.5-0ubuntu1.1
    • 4.6.5-0ubuntu1.2
    • 4.6.5-0ubuntu1.4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • xen Ubuntu:18.04:LTS

    Versions
    • 4.9.0-0ubuntu3
    • 4.9.0-0ubuntu4
    • 4.9.2-0ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • xen Ubuntu:20.04:LTS

    Versions
    • 4.9.2-0ubuntu2
    • 4.9.2-0ubuntu6
    • 4.9.2-0ubuntu7
    • 4.11.3+24-g14b62ab3e5-1ubuntu1
    • 4.11.3+24-g14b62ab3e5-1ubuntu2
    • 4.11.3+24-g14b62ab3e5-1ubuntu2.2
    • 4.11.3+24-g14b62ab3e5-1ubuntu2.3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • xen Ubuntu:22.04:LTS

    Versions
    • 4.11.4+24-gddaaccbbab-1ubuntu2
    • 4.16.0-1~ubuntu2
    • 4.16.0-1~ubuntu2.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • xen Ubuntu:24.04:LTS

    Versions
    • 4.17.2-1
    • 4.17.2+55-g0b56bed864-1
    • 4.17.2+76-ge1f9cb16e2-1
    • 4.17.2+76-ge1f9cb16e2-1ubuntu1
    • 4.17.3+10-g091466ba55-1
    • 4.17.3+10-g091466ba55-1.1ubuntu2
    • 4.17.3+10-g091466ba55-1.1ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • xen Ubuntu:25.10

    Versions
    • 4.20.0-1ubuntu1
    • 4.20.0+68-g35cb38b222-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • xen Ubuntu:26.10

    Versions
    • 4.20.2+7-g1badcf5035-2build2
    • 4.20.2+37-g61ff35323e-1ubuntu1
    • 4.20.3+127-gc42374a105-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • xen Ubuntu:26.04:LTS

    Versions
    • 4.20.0+68-g35cb38b222-1
    • 4.20.2+7-g1badcf5035-2
    • 4.20.2+7-g1badcf5035-2build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →